是否值得在Web项目中使用Cobertura？

I have never used Cobertura or similar tools before, only JUnit (and I've checked what are mocking tools) and in recent days Selenium. I am writing web application with full of JSP, JavaScript (jQuery) and HTML. Can Cubertura helps me in these areas or this tools covered only plain Java classes?I have never used Cobertura or similar tools be